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<script type="text/javascript">
	// 1、把同学们的名字放到一个数组中
	// 2、抽一个随机的下标
	// 3、在数组中获得该下标的对应的元素
	var arr = ['1001号同学','1002号同学','1003号同学','1004号同学','1005号同学','1006号同学','1007号同学','1008号同学','1009号同学','1010号同学','1011号同学','1012号同学','1013号同学','1014号同学','1015号同学','1016号同学','1017号同学','1018号同学','1019号同学','1020号同学','1021号同学','1022号同学','1023号同学','1024号同学','1025号同学','1026号同学','1027号同学','1028号同学','1029号同学','1030号同学','1031号同学','1032号同学','1033号同学','1034号同学','1035号同学','1036号同学','1037号同学','1038号同学'];
	var num = Math.floor(Math.random()*38);
	alert(arr[num]);



</script>
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